A 31 inch cable strung across Aix-Roads. Thomas sees this cable during his first recon mission, but the cable’s dimension refers to the rope’s circumference. Rope over a certain size was labeled by its circumference, not its diameter. In other words, below this size a rope’s specification was its diameter, above this size, its circumference. I think the dividing size is 9 inches, but if anyone knows, I’d be grateful of the real number. In his autobiography Thomas reflects that he did not think the Royal Navy had a cable of such dimensions, this one being the largest he had seen.